Mediation of the relationship between home loss and worsened cardiometabolic profiles of older disaster survivors by post-disaster relocation: A natural experiment from the Great East Japan earthquake and tsunami

Koichiro Shiba, Jun Aida, Katsunori Kondo, Atsushi Nakagomi, Mariana Arcaya, Peter James, Ichiro Kawachi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The underlying mechanism for deterioration in cardiometabolic health after major natural disasters is unknown. We leveraged natural experiment data stemming from the 2011 Great East Japan Earthquake and Tsunami (n = 1165) to examine whether specific types of post-disaster accommodations explain the association between disaster-related property damage and objectively measured cardiometabolic profiles of older disaster survivors. Causal mediation analysis showed that relocation to trailer-style temporary shelters largely mediated the associations between home loss and unhealthy changes in anthropometric measures (72.6% of 0.65 kg/m2 for body mass index and 62.3% of 3.89 cm for waist circumference), but it did not mediate the associations with serum lipid measures. This study demonstrates that there are outcome-specific pathways linking disaster damage and health of survivors.

Original languageEnglish
Article number102456
JournalHealth and Place
Volume66
DOIs
Publication statusPublished - 2020 Nov

Keywords

  • Cardiometabolic
  • Disaster
  • Fixed effects
  • Mediation
  • Natural experiment
  • Neighborhood

ASJC Scopus subject areas

  • Health(social science)
  • Sociology and Political Science
  • Life-span and Life-course Studies

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